Author
Topic: the robotic arm tutorial (Read 7419 times)

After I read the robot arm tutorial, I asked myself: “what could prevent the vertical arm from leaning?” (the attached picture can clarify my point). I looked at the robot arm calculator but I didn't find anything mentioned about that. I did some math and I want to review it with you:

The minimum required calculated torque about that joint is the torque needed to prevent it from 'leaning'. Also, you don't need any trig here - everything should be perfect 90 degree angles if there is no 'leaning'

Also, the equations basically determine an effective moment (torque), so you wouldn't need to do any trig until after you have your 90 degree angle solution done.